js怎样将返回的json数据读取到s:select中

json数据

 [{"inherit":6,"majorID":7,"majorName":"交通工程系"},{"inherit":6,"majorID":9,"majorName":"交通运输工程研究所"},{"inherit":6,"majorID":8,"majorName":"交通运输系"}]

s:select

              <s:select tabindex="-1" 
                                          list="#request.majorList" name="major" id="major"
                                          listKey="majorID" listValue="majorName" value="#request.user.major"
                                          headerKey="" headerValue="--请选择--" 
                                          cssClass="chzn-select" 
                                      >
                       </s:select>

js应该怎么写

 var d=[{"inherit":6,"majorID":7,"majorName":"交通工程系"},{"inherit":6,"majorID":9,"majorName":"交通运输工程研究所"},{"inherit":6,"majorID":8,"majorName":"交通运输系"}];
var sel=document.getElementById('major');
sel.options.length=0;//清空原来的项，如果不想清空去掉这句
for(var i=0;i<d.length;i++)
sel.options.add(new Option(d[i].majorName),d[i].majorID));